Security SCP & AD/ ADS/ ADD/ LAD Series ModelSingle:LAD-120 / LAD-240 / LAD-360 / LAD-600 / SCP-35SCP-50 / SCP-75Dual:AD-55 / ADS-55 / AD-155 / ADS-155Triple:ADD-55 / ADD-155 Wattage : 35W~600WFeatures :With UPS function (need external batteries) for AD/ADD seriesThe LAD series has UART communication function, and posses AC and battery circuit switches with design refer to GB 17945-2010 safety regulationsSuitable for security industry or battery backup systems